Some sort of algae??

[vick52]

This stuff is growing in several of the tanks at my LFS. The plugs with pulsing Xenia to show it attached.

 

[BubblesandSqueak]

if it wasn't pink i'd say bubble algae. I don't think it comes in pink that I've seen.

 

[ISpeakForTheSeas]

This stuff is growing in several of the tanks at my LFS. The plugs with pulsing Xenia to show it attached.

Red Bubble Algae (Botryocladia sp., presumed to be Botryocladia skottsbergii).

Edit: To add, it's typically invasive, so it's generally recommended to remove it.

 

[vick52]

if it wasn't pink i'd say bubble algae. I don't think it comes in pink that I've seen.

Yes. I was thinking bubble algae too. It is slimy when popped.

 

[BubblesandSqueak]

Yes. I was thinking bubble algae too. It is slimy when popped.

Didn’t know it came in red.

 

[ISpeakForTheSeas]

Didn’t know it came in red.

Yeah, regular bubble algae (Valonia species) is green; red bubble algae is a totally different kind of algae (Botryocladia species).